/*
 * Copyright 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.samples.apps.nowinandroid.core.data.repository

import com.google.samples.apps.nowinandroid.core.data.Syncable
import com.google.samples.apps.nowinandroid.core.model.data.NewsResource
import kotlinx.coroutines.flow.Flow

/**
 * Data layer implementation for [NewsResource]
 */
interface NewsRepository : Syncable {
    /**
     * Returns available news resources as a stream.
     */
    fun getNewsResourcesStream(): Flow<List<NewsResource>>

    /**
     * Returns available news resources as a stream filtered by authors or topics.
     */
    fun getNewsResourcesStream(
        filterAuthorIds: Set<String> = emptySet(),
        filterTopicIds: Set<String> = emptySet(),
    ): Flow<List<NewsResource>>
}
